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Riesco-Matías, Pablo, José Ramón Yela-Bernabé, Antonio Crego, y Elena Sánchez-Zaballos. «What Do Meta-Analyses Have to Say About the Efficacy of Neurofeedback Applied to Children With ADHD? Review of Previous Meta-Analyses and a New Meta-Analysis». Journal of Attention Disorders 25, n.º 4 (2021): 473-85. https://doi.org/10.1177/1087054718821731.
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We reviewed previously published meta-analyses of neurofeedback applied to children with ADHD and
conducted a new meta-analysis of randomized controlled trials (RCTs) that updates previous results and incorporates
methodological modifications. Method: Searches were carried out through PubMed, Sage, PsycINFO, SpringerLink, and
Psicodoc. We used Hedges’ (adjusted) g and a random-effects model. To assess heterogeneity, Q and I2 were calculated.
We performed different analyses depending on the control groups, ADHD symptoms, pre- and/or posttreament data used
and symptom evaluator. Results: We reviewed seven meta-analyses, and 17 studies were incorporated into the meta-
analysis. RCTs support the efficacy of neurofeedback applied to ADHD when most proximal evaluators assess symptoms.
Neurofeedback significantly improves inattention symptoms when possibly blinded evaluators assess symptoms. The
preliminary results suggest that stimulant medication is more effective than neurofeedback. Conclusion: New RCTs that
establish links between ADHD symptom measurements, subjects’ learning after neurofeedback, and neurophysiological
measures could improve the quality of the conclusions. (J. of Att. Dis. 2021; 25(4) 473-485)
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